/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.nexmark.model;



import com.fasterxml.jackson.annotation.JsonProperty;

import com.fasterxml.jackson.core.JsonProcessingException;

import com.bff.gaia.unified.sdk.coders.*;

import com.bff.gaia.unified.sdk.nexmark.NexmarkUtils;

import com.bff.gaia.unified.sdk.schemas.JavaFieldSchema;

import com.bff.gaia.unified.sdk.schemas.annotations.DefaultSchema;

import com.bff.gaia.unified.sdk.coders.Coder;

import com.bff.gaia.unified.sdk.coders.CoderException;

import com.bff.gaia.unified.sdk.coders.CustomCoder;

import com.bff.gaia.unified.sdk.coders.InstantCoder;

import com.bff.gaia.unified.sdk.coders.StringUtf8Coder;

import com.bff.gaia.unified.sdk.coders.VarLongCoder;

import org.joda.time.Instant;



import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.Serializable;

import java.util.Comparator;

import java.util.Objects;



/** A bid for an item on auction. */

@DefaultSchema(JavaFieldSchema.class)

public class Bid implements KnownSize, Serializable {

  private static final Coder<Instant> INSTANT_CODER = InstantCoder.of();

  private static final Coder<Long> LONG_CODER = VarLongCoder.of();

  private static final Coder<String> STRING_CODER = StringUtf8Coder.of();



  public static final Coder<Bid> CODER =

      new CustomCoder<Bid>() {

        @Override

        public void encode(Bid value, OutputStream outStream) throws CoderException, IOException {

          LONG_CODER.encode(value.auction, outStream);

          LONG_CODER.encode(value.bidder, outStream);

          LONG_CODER.encode(value.price, outStream);

          INSTANT_CODER.encode(value.dateTime, outStream);

          STRING_CODER.encode(value.extra, outStream);

        }



        @Override

        public Bid decode(InputStream inStream) throws CoderException, IOException {

          long auction = LONG_CODER.decode(inStream);

          long bidder = LONG_CODER.decode(inStream);

          long price = LONG_CODER.decode(inStream);

          Instant dateTime = INSTANT_CODER.decode(inStream);

          String extra = STRING_CODER.decode(inStream);

          return new Bid(auction, bidder, price, dateTime, extra);

        }



        @Override

        public void verifyDeterministic() throws NonDeterministicException {}



        @Override

        public Object structuralValue(Bid v) {

          return v;

        }

      };



  /**

   * Comparator to order bids by ascending price then descending time (for finding winning bids).

   */

  public static final Comparator<Bid> PRICE_THEN_DESCENDING_TIME =

      (left, right) -> {

        int i = Double.compare(left.price, right.price);

        if (i != 0) {

          return i;

        }

        return right.dateTime.compareTo(left.dateTime);

      };



  /**

   * Comparator to order bids by ascending time then ascending price. (for finding most recent

   * bids).

   */

  public static final Comparator<Bid> ASCENDING_TIME_THEN_PRICE =

      (left, right) -> {

        int i = left.dateTime.compareTo(right.dateTime);

        if (i != 0) {

          return i;

        }

        return Double.compare(left.price, right.price);

      };



  /** Id of auction this bid is for. */

  @JsonProperty

  public long auction; // foreign key: Auction.id



  /** Id of person bidding in auction. */

  @JsonProperty

  public long bidder; // foreign key: Person.id



  /** Price of bid, in cents. */

  @JsonProperty

  public long price;



  /**

   * Instant at which bid was made (ms since epoch). NOTE: This may be earlier than the system's

   * event time.

   */

  @JsonProperty

  public Instant dateTime;



  /** Additional arbitrary payload for performance testing. */

  @JsonProperty

  public String extra;



  // For Avro only.

  @SuppressWarnings("unused")

  public Bid() {

    auction = 0;

    bidder = 0;

    price = 0;

    dateTime = null;

    extra = null;

  }



  public Bid(long auction, long bidder, long price, Instant dateTime, String extra) {

    this.auction = auction;

    this.bidder = bidder;

    this.price = price;

    this.dateTime = dateTime;

    this.extra = extra;

  }



  /** Return a copy of bid which capture the given annotation. (Used for debugging). */

  public Bid withAnnotation(String annotation) {

    return new Bid(auction, bidder, price, dateTime, annotation + ": " + extra);

  }



  /** Does bid have {@code annotation}? (Used for debugging.) */

  public boolean hasAnnotation(String annotation) {

    return extra.startsWith(annotation + ": ");

  }



  /** Remove {@code annotation} from bid. (Used for debugging.) */

  public Bid withoutAnnotation(String annotation) {

    if (hasAnnotation(annotation)) {

      return new Bid(auction, bidder, price, dateTime, extra.substring(annotation.length() + 2));

    } else {

      return this;

    }

  }



  @Override

  public boolean equals(Object otherObject) {

    if (this == otherObject) {

      return true;

    }

    if (otherObject == null || getClass() != otherObject.getClass()) {

      return false;

    }



    Bid other = (Bid) otherObject;

    return Objects.equals(auction, other.auction)

        && Objects.equals(bidder, other.bidder)

        && Objects.equals(price, other.price)

        && Objects.equals(dateTime, other.dateTime)

        && Objects.equals(extra, other.extra);

  }



  @Override

  public int hashCode() {

    return Objects.hash(auction, bidder, price, dateTime, extra);

  }



  @Override

  public long sizeInBytes() {

    return 8L + 8L + 8L + 8L + extra.length() + 1L;

  }



  @Override

  public String toString() {

    try {

      return NexmarkUtils.MAPPER.writeValueAsString(this);

    } catch (JsonProcessingException e) {

      throw new RuntimeException(e);

    }

  }

}